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Free-electron maser driven by a two-stage ferroelectric electron gun

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3 Author(s)
Einat, M. ; Faculty of Engineering, Tel Aviv University, Ramat Aviv, 69978, Israel ; Jerby, E. ; Rosenman, G.

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A two-stage ferroelectric electron gun is employed in a free-electron maser (FEM) oscillator experiment. This gun produces a pulsed electron beam of a 5–15 keV energy, ∼0.5 A current, and ∼3% energy spread. The FEM output microwave pulse train is coupled out with a 66 W peak power. The microwave frequency is tunable in the range of 2.9–3.3 GHz by varying the electron beam energy. The interaction mechanism is identified by a comparison to the known FEM tuning relation. The energy spread of the two-stage ferroelectric electron gun satisfies the FEM acceptance parameter in the microwave regime. © 2003 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:93 ,  Issue: 4 )

Date of Publication:

Feb 2003

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